High-frequency ultrasonic transducer fabricated with lead-free piezoelectric single crystal

2010 ◽  
Vol 57 (11) ◽  
pp. 2601-2604 ◽  
Author(s):  
Yan Chen ◽  
Xiang Ping Jiang ◽  
Hao Su Luo ◽  
Ji Yan Dai ◽  
H L W Chan
Keyword(s):  
Single Crystal ◽  
High Frequency ◽  
Ultrasonic Transducer ◽  
Lead Free

Design and fabrication of high frequency ultrasonic transducer based on lead-free Mn-doped (K0.44Na0.56)NbO3 single crystal

2017 ◽  
Vol 267 ◽  
pp. 182-186 ◽  
Author(s):  
Fangyuan Fan ◽  
Xiangyong Zhao ◽  
Feifei Wang ◽  
Qingwen Yue ◽  
Huifang Zhou ◽  
...  
Keyword(s):  
Single Crystal ◽  
High Frequency ◽  
Ultrasonic Transducer ◽  
Lead Free ◽  
Mn Doped

High-frequency PIN–PMN–PT single crystal ultrasonic transducer for imaging applications

2012 ◽  
Vol 108 (4) ◽  
pp. 987-991 ◽  
Author(s):  
Y. Chen ◽  
K. H. Lam ◽  
D. Zhou ◽  
W. F. Cheng ◽  
J. Y. Dai ◽  
...  
Keyword(s):  
Single Crystal ◽  
High Frequency ◽  
Ultrasonic Transducer

Fabrication of a 40 MHz Single Element Ultrasonic Transducer Using a PMN-PT Single Crystal

2006 ◽  
Vol 321-323 ◽  
pp. 978-983 ◽  
Author(s):  
Dong Guk Paeng ◽  
Hyung Ham Kim ◽  
Sang Goo Lee ◽  
Sung Min Rhim ◽  
Min Joo Choi
Keyword(s):  
Single Crystal ◽  
High Frequency ◽  
Electromechanical Coupling ◽  
Ultrasonic Transducer ◽  
Electromechanical Coupling Coefficient ◽  
Single Element ◽  
Transducer Arrays ◽  
High Dielectric ◽  
Pulse Echo ◽  
Piezoelectric Constants

PMN-PT, a piezoelectric single crystal, has been known to be a better material for transducer arrays due to its high electromechanical coupling coefficient (k33) and high dielectric and piezoelectric constants. It may also be good even for high frequency single element transducers using relatively high kt and low attenuation and velocity dispersion. However, it’s challenging to fabricate high frequency transducers using PMN-PT since it is easily breakable and requires small area and thickness of the transducer. A KLM model was used to simulate a 40 MHz single element transducer including 2 matching layers and a conductive backing. The simulation showed that the PMN-PT transducer turned out to be better in sensitivity and bandwidth than a 40 MHz LiNbO3 transducer. A 40 MHz PMN-29%PT transducer was fabricated and the pulse echo signals were obtained and analyzed. Its sensitivity was found to be –48 dB and –6dB bandwidth was about 48 %.

Lead-free piezoelectric single crystal based 1–3 composites for ultrasonic transducer applications

2012 ◽  
Vol 182 ◽  
pp. 95-100 ◽  
Author(s):  
Dan Zhou ◽  
Kwok Ho Lam ◽  
Yan Chen ◽  
Qinhui Zhang ◽  
Yat Ching Chiu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Ultrasonic Transducer ◽  
Lead Free

scholarly journals Lead-free KNLNT piezoelectric ceramics for high-frequency ultrasonic transducer application

Ultrasonics ◽  
2009 ◽  
Vol 49 (3) ◽  
pp. 395-398 ◽  
Author(s):  
D.W. Wu ◽  
R.M. Chen ◽  
Q.F. Zhou ◽  
K.K. Shung ◽  
D.M. Lin ◽  
...  
Keyword(s):  
High Frequency ◽  
Ultrasonic Transducer ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Transducer Application

scholarly journals Fabrication and Characterization of High-Frequency Ultrasound Transducers Based on Lead-Free BNT-BT Tape-Casting Thick Film

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 3166 ◽  
Author(s):  
Junshan Zhang ◽  
Wei Ren ◽  
Yantao Liu ◽  
Xiaoqing Wu ◽  
Chunlong Fei ◽  
...  
Keyword(s):  
Thick Film ◽  
High Frequency ◽  
Electromechanical Coupling ◽  
Ultrasonic Transducer ◽  
Tape Casting ◽  
Lead Free ◽  
Center Frequency ◽  
Electromechanical Coupling Coefficient ◽  
High Frequency Ultrasound ◽  
Casting Method

A lead-free 0.94(Na0.5Bi0.5) TiO3-0.06 BaTiO3 (BNT-BT) thick film, with a thickness of 60 μm, has been fabricated using a tape-casting method. The longitudinal piezoelectric constant, clamped dielectric permittivity constant, remnant polarization and coercive field of the BNT-BT thick film were measured to be 150 pC/N, 1928, 13.6 μC/cm2, and 33.6 kV/cm, respectively. The electromechanical coupling coefficient kt was calculated to be 0.55 according to the measured electrical impedance spectrum. A high-frequency plane ultrasound transducer was successfully fabricated using a BNT-BT thick film. The performance of the transducer was characterized and evaluated by the pulse-echo testing and wire phantom imaging operations. The BNT-BT thick film transducer exhibits a center frequency of 34 MHz, a −6 dB bandwidth of 26%, an axial resolution of 77 μm and a lateral resolution of 484 μm. The results suggest that lead-free BNT-BT thick film fabricated by tape-casting method is a promising lead-free candidate for high-frequency ultrasonic transducer applications.

High-frequency ultrasonic transducer based on lead-free BSZT piezoceramics

Ultrasonics ◽  
2011 ◽  
Vol 51 (7) ◽  
pp. 811-814 ◽  
Author(s):  
S.T.F. Lee ◽  
K.H. Lam ◽  
X.M. Zhang ◽  
H.L.W. Chan
Keyword(s):  
High Frequency ◽  
Ultrasonic Transducer ◽  
Lead Free

High frequency transducer for vessel imaging based on lead-free Mn-doped (K0.44Na0.56)NbO3 single crystal

2017 ◽  
Vol 111 (9) ◽  
pp. 092903 ◽  
Author(s):  
Jinpeng Ma ◽  
Saidong Xue ◽  
Xiangyong Zhao ◽  
Feifei Wang ◽  
Yanxue Tang ◽  
...  
Keyword(s):  
Single Crystal ◽  
High Frequency ◽  
Lead Free ◽  
Vessel Imaging ◽  
Frequency Transducer ◽  
High Frequency Transducer ◽  
Mn Doped

scholarly journals KNN/BNT composite lead-free films for high-frequency ultrasonic transducer applications

2011 ◽  
Vol 58 (1) ◽  
pp. 249-254 ◽  
Author(s):  
Sien Ting Lau ◽  
Hong Fen Ji ◽  
Xiang Li ◽  
Wei Ren ◽  
Qifa Zhou ◽  
...  
Keyword(s):  
High Frequency ◽  
Ultrasonic Transducer ◽  
Lead Free ◽  
Free Films
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